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A simple Pendulum is released from the horizontal position. The length of its string is 1.5 m , and the mass is 50 g. When the pendulum makes an angle of 60 degrees with the vertical, find:
a. the speed of the mass.
b. tension in the string.
c. The tangential acceleration of the mass.
A package is dropped from a helicopter moving upward at 15 m/s. If it takes 24 s before the package strikes the ground, how high above the ground was the package
Wool is rubbed against a plastic ruler. how many electrons have been transferred to the ruler
q1. what are sunspots and how are they related to the suns magnetic field? is the magnetic field stronger weaker in
How many 65W light bulbs can be connected in parallel across a potential difference of 85 V before the total current in the circuit exceeds 2.10A.
A 2.6-kg sphere of radius 35 cm is initially rolling on a flat surface with a speed of v = 0.40 m/s. Determine the force F and the distance l
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
Calculate the focal length required of glasses to be worn, A pair of eyeglasses are designed to allow a person with a near-point distance of 2.52 m to read a road sign at a distance of 25.2 m.
The period of the orbit is 2.1 hours. The radius of the planet is 4.50 × 106 m. Illustrate what would be the true weight of the satellite if it were at rest on the planet’s surface?
The distance from the center of the oxygen atom to the center of a hydrogen atom is 0.96 A, Find the center-to-center distance between the hydrogen atoms
Two hockey players strike a puck of mass 0.169 kg with their sticks simultaneously, exerting forces of 1.17 103 N, compute the instantaneous acceleration of the puck
How to find the magnetic field
A 3.80-mm-wide bolt is viewed with a9.30-cm-focal-length lens. A normal eye views the image at its near point. Calculate the angular magnification
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